I concur with a lot of the other postings. I have an amazing capacity for denial. Perhaps your mom did too.
As for suicide, I think that it is an attempt to stop the mental pain/anguish that someone is experiencing. I have never tried it but have thought of it. I have always felt that God understands our pain. I think God wants us to get help rather than commit suicide. However, I can't stand it when people try to condemn someone for it. It is an act of desperation not a premeditated murder of oneself. I help you will see that your attempt wasn't a sin or wrong. It was just a desperate attempt to deal with whatever issues you had at the time. I am also glad that you didn't succeed and hope that you reach out for help if you ever get the urge again.